Algo Grande Identifies Additional Skarn Mineralization 3km South of Cerro Grande, With Samples Above 3% Copper and Confirms Copper in Multiple Targets on the Property
Original announcement by tmx on
- Company
- Algo Grande Copper Corp.
- Ticker
- ALGR
- Exchange
- TSX
- Region
- Sonora, Mexico
- Primary commodity
- Copper
- Secondary commodities
- Gold, Silver
- Document categories
- Drill results, Other
- Extracted
- 2026-09-13 11:12:03 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Algo Grande has identified a new skarn zone at the Potrero South target, 3km south of the Cerro Grande discovery, with surface samples exceeding 3% Cu. The company also confirmed mineralization at several other targets, including a new machine-learning-identified target (La Molina), while Phase I drill assays remain pending.
Reasoning: The release reports significant new skarn mineralization discovery and high-grade surface intercepts, expanding the project's footprint and confirming multiple targets.
Positive factors
- Discovery of new skarn zone at Potrero South
- High-grade surface samples (41.4% Cu)
- Confirmation of mineralization on both limbs of the anticline
- Machine learning target (La Molina) confirmed
- QA/QC protocols and certified lab (ALS) disclosed
Negative factors
- Surface grab samples are selective and may not be representative
- Assays for Phase I drill program are still pending
Facts used in scoring: 7
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Discovery of a new skarn zone at Potrero South, 3km south of Cerro Grande.
Evidence · text
“led to the discovery of a new skarn zone at Potrero South target, located approximately 3 km south of the Cerro Grande central discovery”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release mentions certified lab (ALS), standards, blanks, and duplicates.
Evidence · text
“The Company maintains a QA/QC program that includes the insertion of certified reference materials, blanks, and duplicates at regular intervals.”
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Drill Results (7)
AG_GC_002Adelita · copperGrade: 1Grade Unit: %Intercept: 36 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- AG_GC_002
- Project
- Adelita
- Commodity
- copper
- Region
- mexico
- Reported Region
- mexico
- Ticker
- ALGR
Geometry
- Grade
- 1
- Grade Unit
- %
- Intercept
- 36 m
- From
- 0 m
- To
- 36 m
- Hole Depth
- 390 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- AG_GC_002:0-36
QA/QC
- Laboratory
- ALS Hermosillo Limited
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-02-05T00:00:00.000Z
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: This is a restatement of results previously reported on February 5, 2026.
Positive factors
- Confirms high-grade skarn horizons
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Las Trancas (trench)Adelita Project · copperGrade: 41.4Grade Unit: %Needs review: ungroundedView all detailsHide details
Identity
- Hole ID
- Las Trancas (trench)
- Project
- Adelita Project
- Commodity
- copper
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 41.4
- Grade Unit
- %
Classification
- Sample Type
- channel
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: Outstanding copper grade from a historical trench/stockpile sample.
Positive factors
- Extremely high grade intercept
Negative factors
- Selective rock sample from an old stockpile
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Las Trancas (trench)Adelita Project · goldGrade: 13.45Grade Unit: g/tNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Las Trancas (trench)
- Project
- Adelita Project
- Commodity
- gold
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 13.45
- Grade Unit
- g/t
Classification
- Sample Type
- channel
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: High grade gold from a historical trench/stockpile sample.
Positive factors
- High grade gold
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Las Trancas (trench)Adelita Project · silverGrade: 1570Grade Unit: g/tNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Las Trancas (trench)
- Project
- Adelita Project
- Commodity
- silver
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 1570
- Grade Unit
- g/t
Classification
- Sample Type
- channel
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: High grade silver from a historical trench/stockpile sample.
Positive factors
- High grade silver
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Potrero SouthAdelita Project · copperGrade: 3.06Grade Unit: %View all detailsHide details
Identity
- Hole ID
- Potrero South
- Project
- Adelita Project
- Commodity
- copper
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 3.06
- Grade Unit
- %
Classification
- Sample Type
- surface
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: High grade copper from surface prospecting in a new skarn zone.
Positive factors
- New skarn zone discovery
Negative factors
- Grab samples are selective
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Potrero SouthAdelita Project · goldGrade: 3.72Grade Unit: g/tView all detailsHide details
Identity
- Hole ID
- Potrero South
- Project
- Adelita Project
- Commodity
- gold
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 3.72
- Grade Unit
- g/t
Classification
- Sample Type
- surface
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: Gold grade from surface prospecting in a new skarn zone.
Positive factors
- Gold presence in new skarn
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
Potrero SouthAdelita Project · silverGrade: 232Grade Unit: g/tView all detailsHide details
Identity
- Hole ID
- Potrero South
- Project
- Adelita Project
- Commodity
- silver
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- ALGR
Geometry
- Grade
- 232
- Grade Unit
- g/t
Classification
- Sample Type
- surface
QA/QC
- Laboratory
- ALS Geochemistry Hermosillo Laboratory
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Deleterious
- Deleterious Flag
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-11T00:00:00.000Z
Reasoning: Silver grade from surface prospecting in a new skarn zone.
Positive factors
- Silver presence in new skarn
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The campaign confirmed copper-gold-silver mineralization across multiple target areas, including Potrero South, Las Tran"
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.